“We’re going to rock the house,” says Bardem, who brought the idea to the attention of "Glee" creator Ryan Murphy while the two worked on the upcoming film adaptation of "Eat Pray Love" which stars Julia Roberts.

Apparently Bardem discovered his inner choir geek while watching the show, devouring the entire first season in a week. He even teased fans on what they can expect from his star turn.

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“We’re going to do some heavy metal — Spanish heavy metal, which is the worst," he said.